CN106599763A - Fingerprint identification sensor and method thereof - Google Patents
Fingerprint identification sensor and method thereof Download PDFInfo
- Publication number
- CN106599763A CN106599763A CN201510674135.0A CN201510674135A CN106599763A CN 106599763 A CN106599763 A CN 106599763A CN 201510674135 A CN201510674135 A CN 201510674135A CN 106599763 A CN106599763 A CN 106599763A
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- China
- Prior art keywords
- sensing electrode
- fingerprint
- sensing
- substrate
- telecommunication
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/1365—Matching; Classification
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03547—Touch pads, in which fingers can move on a surface
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
Abstract
The invention provides a fingerprint identification sensor and a fingerprint identification sensing method. The fingerprint identification sensor comprises a substrate, a plurality of sensing electrodes, an integrated circuit and a protective layer. The substrate comprises a first surface and a second surface. The plurality of sensing electrodes are arranged on the first surface of the substrate for transmitting and receiving electrical signals. The integrated circuit is formed on the first surface of the substrate, and the sensing electrodes are electrically connected to the integrated circuit. The integrated circuit comprises a plurality of phase shifters, wherein each phase shifter is electrically connected to the corresponding sensing electrode for controlling phase of the electrical signal emitted by the corresponding sensing electrode. The protective layer covers the first surface of the substrate.
Description
Technical field
The present invention is related to a kind of fingerprint sensor and its method, and can change particularly with regard to one kind
The fingerprint sensor and its method of kind electric lines of force situation out of focus.
Background technology
In recent years, running gear is increased using universality, especially the individual action with contact panel
With the instrument being dependent on during work in device, even more modern life.It is in order to more meet demand for security, front
State and code-locked program is installed the individual action device with contact panel more, some passwords are numeric types
, some passwords be that pattern type, also some passwords are belonging to biological characteristic, such as：Fingerprint.
For the individual action device using identification of fingerprint technology, due to the phenomenon of signal of telecommunication diverging,
Being limited to cover each knot thereon the sensing limit of its internal fingerprint sensor for being used more
The thickness of structure layer, such as：The protective layer of the contact panel of running gear.
Fig. 1 is refer to, Fig. 1 is the schematic diagram of the fingerprint sensor structure of prior art.Previously
The mode for applying electric field by sensing electrode both sides is also there are in technology, is improved electric lines of force and is defocused
Situation.As shown in figure 1, applying electric field E by the left and right sides of sensing electrode S, just can make
The electric lines of force that sent of sensing electrode S to Medial Convergence, to penetrate to remotely, but the invention institute
Have usually intellectual in category technical field to be appreciated that, this kind of practice still has electric lines of force institute energy
The restriction of the Laminate construction thickness for penetrating.
The content of the invention
The embodiment of the present invention provides a kind of fingerprint sensor.Fingerprint sensor include substrate,
Multiple sensing electrodes, integrated circuit and protective layer.Substrate has first surface and second surface.It is multiple
Sensing electrode is arranged at the first surface of substrate, to launch and receive the signal of telecommunication.Integrated circuit is formed
In the first surface of substrate, the sensing electrode is electrically connected at integrated circuit.Integrated circuit is included
Multiple phase shifters, each phase shifter are correspondingly electrically connected with each sensing electrode,
To the phase place for controlling the signal of telecommunication sent by each sensing electrode.Protective layer is covered in the of substrate
One surface.
The embodiment of the present invention also provides a kind of identification of fingerprint method for sensing, including：It is many on conducting substrate
The Part I of individual sensing electrode；By the Part I in integrated circuit corresponding to multiple sensing electrodes
Multiple phase shifters, control the sensing electrode；The sensing electricity of the conducting controlled by Jing
The signal of telecommunication is launched in pole, to penetrate the fingerprint of the protective layer being covered on substrate to user；And pass through
The Part II of the sensing electrode receives the signal of telecommunication of the fingerprint by using person, to recognize user
Fingerprint.Wherein, in integrated circuit each phase shifter be correspondingly electrically connected with it is every on substrate
One sensing electrode, to the phase for controlling the signal of telecommunication sent when the sensing electrode corresponding to which is turned on
Position.
In sum, the fingerprint sensor provided by the embodiment of the present invention is by phase shifter control
The phase place of the signal of telecommunication sent by each sensing electrode in fingerprint sensing electrode array processed so that every
The electric lines of force sent by individual fingerprint sensing electrode can be converged and not dissipated, and then can penetrate thicker guarantor
Sheath.In addition, the fingerprint sensor provided by the embodiment of the present invention is also by by fingerprint sense
Fingerprint sensing electrode gap formula ground conducting adjacent in electrode array is surveyed, electric lines of force direct-coupling is avoided
Phenomenon, force electric lines of force to upwardly penetrate through to larger distance, to penetrate thicker protection.
Description of the drawings
Fig. 1 is the schematic diagram of the fingerprint sensor structure of prior art.
Fig. 2A is the schematic diagram of identification of fingerprint sensor construction in one embodiment of the invention.
Fig. 2 B are the functional block diagrams of fingerprint sensor in one embodiment of the invention.
Fig. 3 is the schematic diagram of integrated circuit control fingerprint sensing electrode in one embodiment of the invention.
Fig. 4 is the schematic diagram of integrated circuit control fingerprint sensing electrode in another embodiment of the present invention.
Fig. 5 is the flow chart of fingerprinting method in one embodiment of the invention.
Specific embodiment
Various exemplary embodiments will be more fully described referring to alterations below, in alterations
Middle some exemplary embodiments of displaying.However, concept of the present invention may embody in many different forms,
And should not be construed as limited by exemplary embodiments set forth herein.Specifically, there is provided these examples
It will be detailed and complete that the property shown embodiment causes the present invention, and will fully pass on to those who familiarize themselves with the technology
The category of concept of the present invention.In all schemas, perhaps to clear and size that lavish praise on oneself Liao Cengji areas and
Relative size.Similar numeral indicates similar assembly all the time.
Although it should be understood that various groups may be described using term first, second, third, etc. herein
Part, but these components should not be limited by these terms.These terms be distinguish a component with it is another
Component.Therefore, the first assembly being discussed herein below can be described as the second component without departing from concept of the present invention
Teaching.As used herein, term " and/or " list any one of project including associated
And all combinations of one or more.
Referring to Fig. 2A and Fig. 2 B, Fig. 2A is identification of fingerprint sensing in one embodiment of the invention
The schematic diagram of device structure, Fig. 2 B are the function blocks of fingerprint sensor in one embodiment of the invention
Figure.In the present embodiment, fingerprint sensor 2 include substrate 21, multiple sensing electrodes S1～S5,
Integrated circuit 22 and protective layer 23.
As shown in Figure 2 A, the fingerprint sensor 2 of the present embodiment includes substrate 21, multiple sensings
Electrode S1～S5, integrated circuit 22 and protective layer 23.Substrate 21 has first surface 211 and second
Surface 212, multiple sensing electrodes S1～S5 are arranged at the first surface 211 of substrate 21, to launch
With the reception signal of telecommunication.It should be noted that, sensing electrode S1～S5 is with one-dimensional linear formula or two-dimemsional number
Group formula is arranged in the first surface 211 of substrate 21, and for example, sensing electrode S1～S5
Can be the transistor being formed on semiconductor material, glass material or film material, such as：It is formed at glass
Transistor in glass material or film material can be thin film transistor (TFT) (Thin-Film Transistor；
), but the present invention is not intended to limit in this TFT.Integrated circuit 22 is formed at the first surface of substrate 21
211, and sensing electrode S1～S5 is electrically connected at integrated circuit 22.Protective layer 23 is covered in
The first surface 211 of substrate 21.
Further illustrated with Fig. 2 B, in the present embodiment, corresponding to each sensing electrode S1～S5,
Integrated circuit 22 includes an amplifier 221 and a process circuit 222.Amplifier 221 is electrically connected with
In corresponding sensing electrode S1～S5, and process circuit 222 is electrically connected at amplifier 221, with
Process the signal of telecommunication received by corresponding fingerprint sensor S1～S5.And pass with regard to identification of fingerprint
In sensor, the amplifier of integrated circuit and process circuit are should be belonging to the invention for the process of the signal of telecommunication
Have known by usually intellectual in technical field, therefore repeat no more in this.
In order to further illustrate in the present embodiment integrated circuit 22 for fingerprint sensing electrode S1～S5's
Control, please referring next to Fig. 3.Fig. 3 is the control fingerprint sense of integrated circuit 22 in one embodiment of the invention
Survey the schematic diagram of electrode S1～S5.
In the present embodiment, integrated circuit 22 includes multiple phase shifter F1～F5, each
Phase shifter F1～F5 is correspondingly electrically connected with each sensing electrode S1～S5, every to control
The phase place of the signal of telecommunication sent by one sensing electrode S1～S5 so that each sensing electrode S1～S5
The electric lines of force for being sent when being turned on can be converged.It has been observed that in the present embodiment, sensing electrode
Each sensing electrode in array is controlled by phase shifter corresponding in integrated circuit 22.
In Fig. 3, for purposes of illustration only, the electric lines of force produced by each sensing electrode S1～S5 is sent out with which
The wavefront of the signal of telecommunication for going out is used as diagram.In order to solve the identification of fingerprint of the prior art depicted in Fig. 1
The situation of electric lines of force diverging, each phase shifter in integrated circuit 22 in sensor construction
F1～F5 can adjust the phase place of the signal of telecommunication sent by corresponding sensing electrode S1～S5, such as Fig. 3 institutes
Show, the signal of telecommunication sent by each sensing electrode S1～S5 is via corresponding phase shifter F1～F5
After entering horizontal phasing control, the wavefront of the signal of telecommunication just can be advanced and be converged to same point.
Compared to electric lines of force diverging in the fingerprint sensor structure of the prior art depicted in Fig. 1
Situation, in the present embodiment, due to the adjustable sensing electrode S1～S5 institutes of phase shifter F1～F5
The phase place of the signal of telecommunication for sending so as to which wavefront can be converged and not dissipated, therefore can cause sensing electrode S1～S5
The signal of telecommunication (i.e. produced electric lines of force) that sent can the larger protective layer of penetration thickness, increase sensing
Sensitivity.
In order to further illustrate that integrated circuit is for the control of fingerprint sensing electrode in the present embodiment, please
Followed by with reference to Fig. 4.Fig. 4 is integrated circuit control fingerprint sensing electrode in another embodiment of the present invention
Schematic diagram.
First, in Fig. 4, explained with single string fingerprint sensing electrode, adjacent section senses
Electrode S1～S5 and S11～S15 is switched on, and section senses electrode S6～S10 is closed, in this feelings
Under shape, sensing electrode S1～S5 and S11～S15 switched on as electrical signal emitter, and can be closed
Sensing electrode S6 closed～S10 can be used as electric signal receiver.As shown in figure 4, due to be switched on
Pent sensing electricity is separated between sensing electrode S1～S5 and sensing electrode S11 switched on～S15
Pole S6～S10, therefore sensing electrode S1～S5 and sensing electrode S11 switched on～S15 switched on
Between be spaced a segment distance.Consequently, it is possible to just can force sensing electrode S1～S5 switched on
The signal of telecommunication (electric lines of force is illustrated as in Fig. 4) sent by S11～S15 is upwardly penetrated through to larger distance.
In other words, in the present embodiment, adjacent sensing electrode is turned on being controlled as compartment,
The signal of telecommunication sent by sensing electrode switched on is upwardly penetrated through to larger distance, without
Make between adjacent two sensing electrode produce direct-coupling effect (Direct Coupling Effect) thus
The signal of telecommunication cannot be upwardly penetrated through.
Generally speaking, each the sensing electricity in fingerprint sensing electrode array is controlled by phase shifter
The phase place of the signal of telecommunication sent by pole, and by by fingerprint sensing adjacent in fingerprint sensing electrode array
The conducting of electrode gap formula ground, the signal of telecommunication sent by the fingerprint sensor that the present embodiment is provided just can
Protective layer after penetrating relatively.For example, the protective layer of the fingerprint sensor 2 depicted in Fig. 2
23 thickness can be between 400 μm to 700 μm, and this thickness interval contains at present on the market
The universal thickness range of the protective layer of all kinds of running gear panels for widely being used, but the present invention is in this
It is not intended to limit.
In addition, in the present embodiment, fingerprint sensor can be distinguished for brush (Swipe) fingerprint of cunning
Know sensor or pressing type (Touch) fingerprint sensor, but the present invention is not intended to limit in this.Meanwhile,
The principle of this two kinds of fingerprint sensors has usual knowledge in should be the technical field that the present invention belongs to
Known by person, therefore repeat no more in this.
Then, Fig. 5 is refer to, Fig. 5 is the flow chart of fingerprinting method in one embodiment of the invention.
Fingerprinting method 500 described in the present embodiment can be sensed in the identification of fingerprint described in foregoing embodiments
Perform in device, therefore please in the lump according to Fig. 1, Fig. 2A～2B, Fig. 3～4 with profit understanding.
As shown in figure 5, the fingerprinting method 500 described in the present embodiment is comprised the following steps.Yu Bu
In rapid S501, the Part I of the multiple sensing electrodes on substrate is turned on, to launch the signal of telecommunication.In
In step S502, by integrated circuit in, corresponding to the plurality of sensing electrode Part I it is many
Individual phase shifter, controls turned on sensing electrode.It is notably, each phase offset
Device is correspondingly electrically connected with each sensing electrode on substrate, to control and adjust corresponding to which
The phase place of the signal of telecommunication sent by sensing electrode.Must be explanatorily simultaneously, in step S502, control
The mechanism of the phase place of the signal of telecommunication sent with the sensing electrode for adjusting each Jing conducting is a kind of dynamic
The Regulation mechanism of state.That is, the distance of the fingerprint and sensing electrode according to user, and outward
In the change of envirment factor, such as：Temperature, air humidity, multiple phase shifters will be adjusted dividing
Different controls are not made to the phase place of the sensing electrode.Then, in step S503, lead to
The sensing electrode transmitting signal of telecommunication of the conducting of transmission from one meridian to another control, to penetrate the protection being covered on substrate
The fingerprint of layer to user, and in step S504, by the of the plurality of sensing electrode on substrate
Two parts (without the sensing electrode of conducting) receive the signal of telecommunication of the fingerprint by using person.Finally, in
In step S505, by integrated circuit in, Part II corresponding to the plurality of sensing electrode (without
The sensing electrode of conducting) multiple amplifiers, amplify the signal of telecommunication received by the sensing electrode, and
And in step S506, by the process circuit in integrated circuit, the amplified signal of telecommunication is processed,
To produce the sensing signal of the fingerprint corresponding to user.
In sum, the embodiment of the present invention is provided fingerprint sensor and its identification of fingerprint sensing
Method controls each sensing electrode in fingerprint sensing electrode array by phase shifter and is sent
The signal of telecommunication phase place so that the electric lines of force sent by each fingerprint sensing electrode can be converged and not sent out
Dissipate, and then thicker protective layer can be penetrated.In addition, the fingerprint provided by the embodiment of the present invention is distinguished
Sensor and its identification of fingerprint method for sensing are known also by by finger adjacent in fingerprint sensing electrode array
Stricture of vagina sensing electrode compartment ground conducting, avoid the direct-coupled phenomenon of electric lines of force, force electric lines of force to
On penetrate to larger distance, to penetrate thicker protection.
The preferable possible embodiments of the present invention are the foregoing is only, it is all according to scope of the present invention patent institute
The impartial change done and modification, should all belong to the covering scope of the present invention.
【Symbol description】
E：Electric field
S：Sensing electrode
2：Fingerprint sensor
21：Substrate
211：First surface
212：Second surface
22：Integrated circuit
221：Amplifier
222：Process circuit
23：Protective layer
S1～S5, S6～S10, S11～S15：Sensing electrode
F1～F5：Phase shifter
500：Identification of fingerprint method for sensing
S501～S506：Step.
Claims (12)
1. a kind of fingerprint sensor, it is characterised in that the fingerprint sensor includes：
One substrate, with a first surface and a second surface；
Multiple sensing electrodes, are arranged at the first surface of the substrate, to launch and receive
The signal of telecommunication；
One integrated circuit, is formed at the first surface of the substrate, and the sensing electrode is electrical
It is connected to the integrated circuit；And
One protective layer, is covered in the first surface of the substrate；
Wherein, the integrated circuit includes multiple phase shifters, each phase shifter
Each sensing electrode is correspondingly electrically connected with, it is sent out to control each sensing electrode
The phase place of the signal of telecommunication for going out.
2. fingerprint sensor according to claim 1, it is characterised in that wherein described sense
Survey the first surface that electrode is arranged in the substrate with one-dimensional linear formula or two-dimensional array formula.
3. fingerprint sensor according to claim 1, it is characterised in that wherein described sense
It is the transistor being formed on semiconductor material, glass material or film material to survey electrode.
4. fingerprint sensor according to claim 2, it is characterised in that wherein adjacent
The sensing electrode is turned on being controlled as compartment.
5. fingerprint sensor according to claim 1, it is characterised in that the identification of fingerprint
Sensor is the brush fingerprint sensor of a cunning or a pressing type fingerprint sensor.
6. fingerprint sensor according to claim 1, it is characterised in that wherein this is integrated
Circuit also includes：
Multiple amplifiers, each amplifier are correspondingly electrically connected with each sensing electrode；
And
One process circuit, is electrically connected at the amplifier, to process the sensing electrode institute
The signal of telecommunication of reception.
7. a kind of identification of fingerprint method for sensing a, it is adaptable to fingerprint sensor, it is characterised in that
The identification of fingerprint method for sensing includes：
Turn on a Part I of the multiple sensing electrodes on a substrate；
By in an integrated circuit corresponding to the plurality of sensing electrode the Part I it is multiple
Phase shifter, controls turned on sensing electrode；
The sensing electrode for being turned on controlled by Jing launches the signal of telecommunication, is covered in this to penetrate
The fingerprint of the protective layer on substrate a to user；And
Received by the user by a Part II of the plurality of sensing electrode on the substrate
Fingerprint the signal of telecommunication, to recognize the fingerprint of the user；
Wherein, each phase shifter be correspondingly electrically connected with the substrate it is each should
Sensing electrode, to control the signal of telecommunication sent when the sensing electrode corresponding to which is turned on
Phase place.
8. identification of fingerprint method for sensing according to claim 7, it is characterised in that wherein described
Sensing electrode is arranged on the substrate with one-dimensional linear formula or two-dimensional array formula.
9. identification of fingerprint method for sensing according to claim 7, it is characterised in that wherein described
Sensing electrode is thin film transistor (TFT).
10. identification of fingerprint method for sensing according to claim 8, it is characterised in that wherein adjacent
The sensing electrode turn on being controlled as compartment.
11. identification of fingerprint method for sensing according to claim 7, it is characterised in that wherein this refers to
Stricture of vagina identification sensor is the brush fingerprint sensor of a cunning or pressing type identification of fingerprint sensing
Device.
12. identification of fingerprint method for sensing according to claim 7, it is characterised in that the fingerprint is distinguished
Knowing method for sensing also includes：
In by the integrated circuit, corresponding to the plurality of sensing electrode the Part II it is many
Individual amplifier, amplifies the signal of telecommunication received by the sensing electrode；And
By a process circuit in the integrated circuit, the amplified signal of telecommunication is processed, to recognize
The fingerprint of the user.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510674135.0A CN106599763B (en) | 2015-10-16 | 2015-10-16 | Fingerprint identification sensor and method thereof |
| US14/979,432 US9792481B2 (en) | 2015-10-16 | 2015-12-27 | Fingerprint sensor and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510674135.0A CN106599763B (en) | 2015-10-16 | 2015-10-16 | Fingerprint identification sensor and method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106599763A true CN106599763A (en) | 2017-04-26 |
| CN106599763B CN106599763B (en) | 2020-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510674135.0A Active CN106599763B (en) | 2015-10-16 | 2015-10-16 | Fingerprint identification sensor and method thereof |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US9792481B2 (en) |
| CN (1) | CN106599763B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150018350A (en) * | 2013-08-08 | 2015-02-23 | 삼성전자주식회사 | Fingerprint Recognizing Apparatus And Manufacturing Method Thereof And Electronic Device |
| CN111695388A (en) * | 2019-03-15 | 2020-09-22 | 京东方科技集团股份有限公司 | Fingerprint identification structure, driving method thereof and display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130207906A1 (en) * | 2012-02-15 | 2013-08-15 | Marduke Yousefpor | Quadrature demodulation for touch sensitive devices |
| CN204440357U (en) * | 2015-03-16 | 2015-07-01 | 林志忠 | The contactor control device of tool identification of fingerprint |
| CN104978559A (en) * | 2014-04-03 | 2015-10-14 | 神盾股份有限公司 | TFT Fingerprint Sensor and operation method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6088471A (en) | 1997-05-16 | 2000-07-11 | Authentec, Inc. | Fingerprint sensor including an anisotropic dielectric coating and associated methods |
| US9285902B1 (en) * | 2010-08-25 | 2016-03-15 | Parade Technologies, Ltd. | Multi-phase scanning |
| US8729911B2 (en) * | 2011-04-19 | 2014-05-20 | Cypress Semiconductor Corporation | Usage of weighting matrices in multi-phase scanning modes |
| TW201416991A (en) | 2012-10-16 | 2014-05-01 | Wei-Ting Lin | Capacitive fingerprint sensor and method of manufacturing the same |
| US10203816B2 (en) * | 2013-05-07 | 2019-02-12 | Egis Technology Inc. | Apparatus and method for TFT fingerprint sensor |
| US9542588B2 (en) * | 2014-11-17 | 2017-01-10 | Cypress Semiconductor Corporations | Capacitive fingerprint sensor with quadrature demodulator and multiphase scanning |
| CN107092896A (en) | 2014-12-30 | 2017-08-25 | 深圳市汇顶科技股份有限公司 | Fingerprint Identification sensor and terminal device |
-
2015
- 2015-10-16 CN CN201510674135.0A patent/CN106599763B/en active Active
- 2015-12-27 US US14/979,432 patent/US9792481B2/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130207906A1 (en) * | 2012-02-15 | 2013-08-15 | Marduke Yousefpor | Quadrature demodulation for touch sensitive devices |
| CN104978559A (en) * | 2014-04-03 | 2015-10-14 | 神盾股份有限公司 | TFT Fingerprint Sensor and operation method thereof |
| CN204440357U (en) * | 2015-03-16 | 2015-07-01 | 林志忠 | The contactor control device of tool identification of fingerprint |
Also Published As
| Publication number | Publication date |
|---|---|
| US9792481B2 (en) | 2017-10-17 |
| US20170109559A1 (en) | 2017-04-20 |
| CN106599763B (en) | 2020-05-12 |
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